F27D 3/026
Transport or conveyor rolls for furnaces
Official title: {transport or conveyor rolls for furnaces; roller rails}
F27D3/026 (Transport or conveyor rolls for furnaces) appears on 143 US grants and 75 published applications in this corpus.
Search patents in F27D- Granted patents
- 143
- Published applications
- 75
- Assignees
- 104
- Inventors
- 317
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 6 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 4 | 0 |
| 1990 | 0 | 0 |
| 1991 | 5 | 0 |
| 1992 | 7 | 0 |
| 1993 | 3 | 0 |
| 1994 | 10 | 0 |
| 1995 | 7 | 0 |
| 1996 | 3 | 0 |
| 1997 | 8 | 0 |
| 1998 | 8 | 0 |
| 1999 | 6 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 1 |
| 2002 | 4 | 5 |
| 2003 | 3 | 2 |
| 2004 | 1 | 3 |
| 2005 | 2 | 4 |
| 2006 | 2 | 4 |
| 2007 | 2 | 4 |
| 2008 | 3 | 1 |
| 2009 | 2 | 2 |
| 2010 | 0 | 3 |
| 2011 | 2 | 2 |
| 2012 | 4 | 5 |
| 2013 | 2 | 3 |
| 2014 | 3 | 6 |
| 2015 | 5 | 3 |
| 2016 | 3 | 2 |
| 2017 | 3 | 5 |
| 2018 | 4 | 0 |
| 2019 | 2 | 3 |
| 2020 | 2 | 1 |
| 2021 | 1 | 5 |
| 2022 | 1 | 3 |
| 2023 | 1 | 5 |
| 2024 | 4 | 2 |
| 2025 | 0 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Device for heating steel products9 Jun 2026US 12,649,956 B2Danieli & C. Officine Meccaniche SpA
- Method for heating a blank and heating system10 Dec 2024US 12,163,737 B2Autotech Engineering S.L.
- Mounting a ceramic roller in a roller hearth furnace12 Nov 2024US 12,140,375 B2Schwartz GmbH
- Transport roller for heating furnaces8 Oct 2024US 12,111,108 B2Noritake Co., Limited
- Roller for a roller hearth furnace9 Jan 2024US 11,867,463 B2SMS group GmbH
- Heat treatment system18 Dec 2025US 2025/0383154 A1NGK Insulators, Ltd.
- Device for heating steel products29 Feb 2024US 2024/0068062 A1Danieli & C. Officine Meccaniche SpA
- Centering device for metal blanks4 Jan 2024US 2024/0003628 A1EBNER Industrieofenbau GmbH
- Method for heating a blank and heating system9 Nov 2023US 2023/0358473 A1Autotech Engineering S.L.
- Transport device with low-tension foil guiding for the production of batteries1 Jun 2023US 2023/0166923 A1Battrion AG
Most cited
By later US patents
- Quick change conveyor roll sleeve assembly and method93US 8,915,830 B2Pyrotek, Inc. · 2014
- Quick change conveyor roll sleeve assembly and method71US 9,193,532 B2Pyrotek, Inc. · 2015
- Pulling rolls for use in manufacturing sheet glass49US 6,896,646 B2Corning Incorporated · 2005
- Seal assembly for thermal treatment furnaces using an atmospheric gas containing hydrogen gas32US 5,693,288 ANisshin Steel Co., Ltd. · 1997
- Insulating roll cover30US 5,205,398 AEltech Systems Corporation · 1993